反应详情

A mixture of L-histidine (15.51 g, 100 mmol) and acetone (14.7 mL, 200 mmol) was agitated in an atmosphere of hydrogen (pressure, 46-51 psi) at 40° C. in 500 mL ethanol in the presence of Pd/C (20%, 2 g) until the absorption of hydrogen had ceased. The mixture was filtered, and the filtrate was concentrated to dryness under reduced pressure. The white solid thus obtained was triturated with ethanol and dried under vacuum to give 7.31 g (37%) of the title compound as a white solid.

1. filtrationThe mixture was filtered
2. concentrationthe filtrate was concentrated to dryness under reduced pressure
3. customThe white solid thus obtained
4. customwas triturated with ethanol
5. customdried under vacuum